Refrigerant-134a enters a 28-cm diameter pipe steadily at 200 kPa and 20C with a velocity of 6.3 m/s. The refrigerant gains heat as it flows and leaves the pipe at 180 kPa and 40C. Determine(a) the volume flow rate of the refrigerant at the inlet,(b) the mass flow rate of the refrigerant, and(c) the velocity and volume flow rate at the exit.

On a average work day more than work place firs are reorted

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way